Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on the Discrimination of the Overhead Stirrer Impeller using the Dimensions of Permanent Magnets

영구자석의 형상을 이용한 오버헤드 교반기용 임펠러 종류의 인식에 관한 연구

  • Lee, Ho-Cheol (School of Mechanical and Automotive Engineering, Daegu Catholic Univ.) ;
  • Kim, Gi-Dae (School of Mechanical and Automotive Engineering, Daegu Catholic Univ.)
  • 이호철 (대구가톨릭대학교 기계자동차공학부) ;
  • 김기대 (대구가톨릭대학교 기계자동차공학부)
  • Received : 2018.08.08
  • Accepted : 2018.10.06
  • Published : 2019.02.28
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Abstract

To develop a stirring device that can automatically measure the viscosity of a fluid, the impeller type of the device must be recognized without making contact. In this study, we propose a method to discriminate the type of impellers using the changes in the magnetic field. Permanent magnets are inserted into a hollow hole of the impellers, and the change of the magnetic field is measured by a hall sensor. All experimental results are compared with the FEM analysis results. The results show that with the increase in diameter and length of the magnet inserted into the impeller, the magnitude of the magnetic flux density increases. The magnetic field is more sensitive to the change in the magnet diameter than to the change in magnet length. In order to reduce the machining costs, however, it is advantageous to change the magnet length instead of the magnet diameter.

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References

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  2. Analysis of Effect of Stirring Process Conditions on Liquid Viscosity in an Overhead Stirrer vol.37, pp.9, 2020, https://doi.org/10.7736/jkspe.020.033
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